/Engine/Source/Runtime/GeometryCore/Public/Spatial/SparseGrid3.h
Iterate over existing allocated elements within the integer bounds defined by Min and Max (inclusive), and apply ElementFunc(ElementType) to each of them
template<typename Func> void RangeIteration ( [FVector3i](API\Runtime\GeometryCore\FVector3i) MinIndex, [FVector3i](API\Runtime\GeometryCore\FVector3i) MaxIndex, Func ElementFunc ) const